package com.set;

import java.util.HashSet;
import java.util.Set;

import org.junit.Test;

public class SetTest {
  
    @Test
    public void setTest(){
         Set set=new HashSet();
         
         set.add(1);

         System.out.println(set.size());
         System.out.println(set.hashCode());
    }
}
